what is earth please explain everything how many continents , countries are there and how many seas,oceans are there with thier diagram and their size and shape
Answers
Explanation:
The sea, the world ocean, or simply the ocean is the connected body of salty water that covers about 71% of Earth's surface (361,132,000 square kilometres [139,434,000 sq mi]), with a total volume of roughly 1,332,000,000 cubic kilometres [320,000,000 cu mi].[1] It moderates Earth's climate and has important roles in the water cycle, carbon cycle, and nitrogen cycle. It has been travelled and explored since ancient times, while the scientific study of the sea—oceanography—dates broadly from the voyages of Captain James Cook to explore the Pacific Ocean between 1768 and 1779. The word sea is also used to denote smaller, partly landlocked sections of the ocean and certain large, entirely landlocked, saltwater lakes, such as the Caspian Sea and the Dead Sea.